This sermon examines the theological distinction between the corrupted conscience of the natural man and the cleansed conscience of the believer, grounded in the finished work of Christ. Drawing from Hebrews 9 and Romans 1, the message explains that apart from Christ, humanity suppresses divine truth and substitutes it with idolatry, resulting in a seared conscience and a broken moral compass. In contrast, the blood of Jesus Christ provides eternal redemption and justification, effectively cleansing the believer's conscience from dead works to serve the living God. The exposition emphasizes that this cleansing is achieved solely through faith in Christ's imputed righteousness, not through human effort or moralism. Finally, the sermon addresses the practical implications of this truth, urging believers to trust in the sufficiency of Christ's work while maintaining a horizontal responsibility to seek reconciliation with others they have wronged.